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3 years ago

What is the numerical factor of a multiplication expression like 3x

Mathematics

1 answer:

sweet [91]3 years ago

5 0

3x can be factored into 3 times x. The numerical factor is 3.

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AJLK ~ APQR. Find the value of . 22 14 7 1 8 K 16 20 2=

In-s [12.5K]

Answer:

x = 11

Step-by-step explanation:

sides are proportional so you can set up a proportional and cross-multiply:

JL is to PQ as LK is to QR

x/22 = 8/16

x/22 = 1/2

2x = 22

x = 11

5 0

3 years ago

The commutative property only works under what two operations?

lara [203]

The commutative property only works under addition and multiplication properties.

5 0

3 years ago

How to Solve S=2(pi)rh for pi

Kruka [31]

2x3.14xrxh= answer, theres different types to get the answer there is 2(pi)r^2

3 0

3 years ago

Is -14 a natural number, whole number, integer, rational or irrational number?

Sveta_85 [38]

Answer:

Step-by-step explanation:

-14 is an integer

We can also tell as rational number

as -14 can be written in the form p/q, ie -14/1

7 0

3 years ago

The function f(x) = –x2 + 20x – 75 models the profit from one customer, in dollars, a shop makes for printing photos, where x is

trasher [3.6K]

The function is graphed as shown below

Part A:

We use the formula $- \frac{b}{2a}$ to find the vertex of the function. A quadratic function of the form of $a x^{2} +bx+c$ and equating this form to the given function $- x^{2} +20x-75$ , we have
$b=20$ and $a=-1$ .

Substituting $a$ and $b$ into the vertex formula, we have
$x=- \frac{20}{2(-1)}=10$ , as shown in the graph

This calculation means that the highest profit is achieved when the number of photo printed equals to ten photos

Part B:

We can find solution to this equation by factorising

$- x^{2} +20x-75=0$
$-( x^{2} -20x+75)=0$
$x^{2} -20x+75=0$
$(x-5)(x-15)=0$
$x=5$ and $x=15$ , as shown in the graph

The two values means that the company makes no profit when they either produce 5 or 15 photos

8 0

3 years ago